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Pitot tube is a device used to measure the fluid flow measurement invented by Henri Pitot, a French engineer in 18th century. It is widely to measure the airspeed of aircrafts, speedboat speed and for fluid flow measurement in industrial application. Pitot tube…
What is Direct Acting ? Direct acting means that valves uses a power supply to open and close. Power is transformed into magnetic force,in a plunger type valve,forces a plunger to move and open or close the valve seats. Other direct…
Thermocouple Gauge Thermocouple gauge is a device used to measure low vacuum.Working of a Thermocouple GaugeIn Thermocouple Gauge a filament is heated by passing constant current through it.When gas molecule interact with filament heat is carried away.Therefor the temperature is directly depended on…
Pirani GaugePirani gauge is a device used to measure low vacuum in a pressure range from 0.5 Torr to 10−4 Torr. Working Principle and Construction of Pirani gauge Pirani gauge consist of two tungsten filaments,a power source and a volt meter or ammeter.One of the filaments is…
What is a Load Cell?Load cell is a device that converts force in to an electrical signal.A load sensor is a sensor or a transducer that converts a load or force acting on it into an electronic signal.This electronic signal can be…
How Differential Flow Meter Works? The differential flow meter is the most common device for measuring fluid flow through pipes. Flow rate and pressure differential of fluids such as gases,vapors and liquids are explored using the orifice plate flow meter. The differential…
Electrical Protective Device A device used to protect equipment,machinery,components and devices,in electrical and electronic circuit,against short circuit,over current and earth fault,is called as protective devices. Necessity of Protective Devices Protective devices are necessary to protect electrical appliance or equipment against a)Short Circuit…
The differences between circuit breakers and fuses. Both residential and industrial electronics circuits systems require some form of protection to prevent catastrophic failure circuit damage or loss of life due to excessive current brought on by a short circuit overload device failure or…
While reading the instrument specification or electrical equipment specification you might have seen IP classes.IP is interpreted as Ingress protection.Ip calsses stands for specifying the environmental protection of electrical equipments. With ingression protection class we can understand, an instrument can withstand in…
What are the process Variables? The process Variables are: • Flow. • Pressure. • Temperature. • Level. • Quality i.e. % O2, CO2, pH etc. Define all the process Variable and state their unit of measurement. ? Flow: Any fluids or liquids…